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Gabriella went shopping for a new phone. Sales tax where she lives is 
9%. What number should she multiply the price of the phone by to find the total plus tax in one step?
Answer:

Gabriella went shopping for a new phone. Sales tax where she lives is 9% 9 \% . What number should she multiply the price of the phone by to find the total plus tax in one step?\newlineAnswer:

Full solution

Q. Gabriella went shopping for a new phone. Sales tax where she lives is 9% 9 \% . What number should she multiply the price of the phone by to find the total plus tax in one step?\newlineAnswer:
  1. Calculate Total Cost: To find the total cost including tax in one step, Gabriella needs to multiply the price of the phone by a factor that includes both the original price and the sales tax. The sales tax is 9%9\%, which means that for every dollar, an additional $0.09\$0.09 is charged as tax.\newlineTo include this in the original price, we add 11 (representing 100%100\% of the original price) to 0.090.09 (representing the 9%9\% tax).\newlineCalculation: 1+0.09=1.091 + 0.09 = 1.09
  2. Factor for Tax Inclusion: Gabriella should multiply the price of the phone by 1.091.09 to find the total cost including the 9%9\% sales tax in one step.

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